Patents by Inventor Andrew R. Willemsen

Andrew R. Willemsen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: D348363
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: July 5, 1994
    Inventor: Andrew R. Willemsen
  • Patent number: D350036
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: August 30, 1994
    Inventor: Andrew R. Willemsen